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Mining Ebola tweets yields valuable outbreak information

MEDICAL NEWS TODAY                                                    June 2, 2015
(Scroll down for study.)
Last year, in the 3 days before the outbreak was officially announced, over 60 million people received tweets about the Ebola outbreak in West Africa, say the authors of a new study published in the American Journal of Infection Control that investigates the useful role that Twitter can play in outbreak monitoring and control.


In the 3 days prior to Nigeria's official announcement about Ebola, Twitter users had already shared around 1,500 tweets about the outbreak....

Social media allow users to play active roles in spreading news. Users can share insights, opinions, fears and ideas, outside the contexts of conventional public health channels.

For their study, two researchers from Columbia University School of Nursing in New York, analyzed Ebola-related tweets posted over a week in the early stages of the West African outbreak - from July 24th to August 1st 2014....

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WHO Director-General Addresses High-Level Meeting on Ebola R&D

                                                           

From crisis to sustainable development: lessons from the Ebola outbreak

who.int - May 10, 2015

. . . three changes will do the most to improve the world’s collective defence against the infectious disease threat.

First, invest in building resilient communities and well-performing health systems that integrate public health and primary health care. Ideally, health systems should aim for universal health coverage, so the poor are not left behind. This requires new thinking and a new approach to health development.

Second, develop the systems, capacities, and financing mechanisms needed to build surge capacity for responding to outbreaks and humanitarian emergencies.

Third, create incentives for R&D for new medical products for diseases that primarily affect the poor. A fair and just world should not let people die for what boils down to market failure and poverty.

These three things also fit well with the coming agenda for sustainable development that seeks to distribute the benefits of economic growth more evenly and respects our planet’s fragile resources.

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Ella Foundation announces key outcomes in Ebola vaccine research

BUSINESS STANDARD                                                                        April 27, 2015

HYDERABAD, India --Ella Foundation, which has taken up research for finding a potential vaccine for the deadly Ebola virus, today said it had successfully completed preliminary studies on the virus, which was responsible for high fatalities among humans in central Africa.

The Hyderabad-based foundation said it had completed the preliminary animal (with mice) experiments of the virus' glycoprotein with the targeted adenovirus, and the "immune response results have been good", which would be followed by toxicology tests and the subsequent clinical trials involving human beings.

Adenoviruses are responsible for respiratory infections, gastroenteritis, cystitis, and primary pneumonia in humans, and are therefore used as a clear target to understand the human immunity characteristics in laboratory. However, the efficacy of the vaccine is judged by the outcomes seen in human trials.

Read complete story.

http://www.business-standard.com/article/current-affairs/ella-foundation-announces-key-outcomes-in-ebola-vaccine-research-115042700631_1.html

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Ebola survivors donate plasma to tackle outbreak

EUREKALERT                                                                           April 22, 2015
UNIVERSITY OF LIVERPOOL -- 
The first donations of plasma, from survivors of the Ebola epidemic in Sierra Leone, have been received by an international research team working to help tackle current and future disease outbreaks in West Africa.

The team, led by scientists at the University of Liverpool and colleagues at the College of Medicine and Allied Health Services, Ministry of Health, Sierra Leone, is investigating how plasma from Ebola survivors could help treat patients with the disease at the Ebola Treatment Unit, run by the 34th Regiment Military Hospital group in Freetown.

Dr Calum Semple, from the University's Institute of Child Health, and his collaborators developed a convalescent plasma protocol in readiness for an outbreak, such as Ebola, as part of the outbreak preparatory work of the International Severe Acute Respiratory and Emerging Infection Consortium.

The study is one of several being supported by the Wellcome Trust's platform for evaluating experimental Ebola therapeutics in West Africa.

Read complete story.
http://www.eurekalert.org/pub_releases/2015-04/uol-esd042215.php

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Tekmira Ebola drug succeeds in small monkey study

REUTERS by Aharon Begley                                                                    Aug. 22, 2015
NEW YORK --An experimental Ebola drug from Tekmira Pharmaceuticals Corp cured all three monkeys intentionally infected with the virus, scientists reported on Wednesday, the first such success against the strain of Ebola in West Africa's 2014-2015 outbreak.

Although other experimental treatments appeared to help Ebola patients last year, especially in the United States, those one-time uses cannot prove efficacy against the "Makona" strain, since patients' recovery might be due to other causes. Similarly, drugs, including Mapp Biopharmaceutical's ZMapp, cured monkeys in lab experiments, but in a strain of Ebola different from that responsible for the current outbreak, the worst ever recorded.

"We can't say for certain that an experimental drug that works against one strain will work in another, even if they're almost identical genetically," said Thomas Geisbert of the University of Texas Medical Branch, senior author of the study published in the journal Nature.

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Understanding the Emergence of Ebola Virus Disease in Sierra Leone: Stalking the Virus in the Threatening Wake of Emergence

PLOS  Current Outbreaks  by Nadia Wauquier and others                                             April 20, 2015

The initial steps of emergence and spread of a virus are critical in the development of a potential outbreak and need to be thoroughly dissected and understood in order to improve on preventative strategies. In the current West African outbreak of EVD, a unique index case has been identified, pinpointing the geographical origin of the epidemic in Guinea.

Herein, we provide an accounting of events that serve as the footprint of EVD emergence in Sierra Leone and a road map for risk mitigation fueled by lessons learned....

...Continuous active surveillance is needed and must be organized by specialized centers joined in local, regional, and international networks. Surveillance centers must be connected to public health systems and also to research teams for increased understanding and awareness to permit identification and implementation of rapid intervention strategies....

Read complete study  and see maps.

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Scientists to share real-time genetic data on deadly MERS, Ebola

REUTERS by Kate Kelland                     April 21, 2015

LONDON, April 21 - Genetic sequence data on two of the deadliest yet most poorly understood viruses are to be made available to researchers worldwide in real time as scientists seek to speed up understanding of Ebola and MERS infections.

The project, led by British scientists with West African and Saudi Arabian collaboration, hopes to encourage laboratories around the world to use the live data -- updated as new cases emerge -- to find new ways to diagnose and treat the killer diseases, and ideally, ultimately, prevent them.

"The collective expertise of the world's infectious disease experts is more powerful than any single lab, and the best way of tapping into this...is to make data freely available as soon as possible," said Jeremy Farrar, director of the Wellcome Trust global health charity which is funding the work.

The gene sequences, already available for MERS cases and soon to come in the case of Ebola, will be posted on the website virological.org for anyone to see, access and use.

Read complete story.

http://af.reuters.com/article/topNews/idAFKBN0NC19W20150421?sp=true

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Evaluating Clinical Trial Designs for Investigational Treatments of Ebola Virus Disease

PLOS MEDICINE   by Ben Cooper and others                                                             April 14, 2015
Experimental treatments for Ebola virus disease might reduce EVD mortality. There is uncertainty about the ability of different clinical trial designs to identify effective treatments, and about the feasibility of implementing individually randomised controlled trials during an Ebola epidemic

A treatment evaluation programme for use in EVD was devised using a multi-stage approach (MSA) with two or three stages, including both non-randomised and randomised elements. The probabilities of rightly or wrongly recommending the experimental treatment, the required sample size, and the consequences for epidemic outcomes over 100 d under two epidemic scenarios were compared for the MSA, a sequential randomised controlled trial (SRCT) with up to 20 interim analyses, and, as a reference case, a conventional randomised controlled trial (RCT) without interim analyses.

Read complete study.

http://journals.plos.org/plosmedicine/article?id=10.1371/journal.pmed.1001815

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Testing of Ebola vaccine is underway in Sierra Leone

USA TODAY by Liz Szabo                                                                 April 14, 2015
Sierra Leone has begun testing an experimental Ebola vaccine, officials of the Centers for Disease Control and Prevention announced Tuesday.
                                                                                            (Photo: CELLOU BINANI, AFP/Getty Images)

The $25 million study, funded through $5.4 billion in Ebola aid authorized by Congress, will test vaccines on 6,000 "front-line workers," including doctors, nurses, burial workers and others, who are at highest risk of the disease.

But with only a handful of new Ebola cases being reported now in Sierra Leone, it may be difficult to get a clear answer on whether the vaccine actually works, the CDC acknowledges. If there are no new cases of Ebola among vaccinated volunteers, for example, researchers won't know if that's the result of the immunizations or because the outbreak has faded....

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2 new ebola vaccines pass important early test, researchers say

NEW YORK TIMES   by Denis Grady                                                                 April 9. 2015

Two  new Ebola vaccines have passed an important test, protecting monkeys against the strain of the virus responsible for the current deadly outbreak, researchers reported on Wednesday. Only one dose was needed, and there were no apparent side effects..

Thomas W. Geisbert, an Ebola expert at the University of Texas Medical Branch in Galveston, in his office. Credit Michael Stravato for The New York Times

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